Question

Iwo bodies of mass 1 kg and 3 kg have equal kinetic energies. Find the ratio of their velocit ​

Answer 1

Answer:

1 : 3

Step-by-step explanation:

Kinetic energy formula: 1 / 2 mv²

First body : 1 / 2 * 1 * v²

                 = v² / 2

Second body : 1 / 2 * 3 * v²

                      = 3v² / 2

Ratio of the energies = First body / Second body

                                   = v² / 2     /     3v² / 2

                                   = v² / 2     *     2 / 3v²

                                   = 1             *     1 / 3

                                   =  1            /         3

                                   = 1 : 3

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